[Gonads].
D000818:Animals; D001717:Birds; D002417:Cattle; D055598:Chemical Phenomena; D002621:Chemistry; D005399:Fishes; D012739:Gonadal Steroid Hormones / Q000378:metabolism*; D006066:Gonads / Q000378:metabolism*; D006801:Humans; D051379:Mice; D011817:Rabbits; D051381:Rats; D013045:Species Specificity; D013256:Steroids / Q000378:metabolism*; D013552:Swine
D012739:Gonadal Steroid Hormones; D013256:Steroids